A Plastic Cover Block is essentially a spacer that is used to lift the rebar matrix off the ground so that concrete may flow underneath the rebar. This gives strength to the beam.
Ismail present you with a world-class plastic product known as Cover blocks (Chair Type, Circular Type and Locking Type) used in place of Concrete Cover Blocks (In RCC Construction). These blocks not only help to keep the reinforcement bars at the specified place, they also offer convenience of use